Many of us, owing to an intuitive sense of where technological and social progress are taking us, have a preconceived notion of what the future will look like. But as history has continually shown, the future doesn't always go according to plan. Here are 11 ways the world of tomorrow may not unfold the way we expect.»1/29/15 10:30am 1/29/15 10:30am

A report just published in Nature by a group of 22 international scientists warns that human activity is quickly pushing the planet to a tipping point, after which time the Earth's ecosystem will suffer a rapid and irreversible collapse. What's worse: They suggest we're nearly there. »6/07/12 12:20pm 6/07/12 12:20pm